What Causes Brown Oil Discharge With Stool?

i went to the bathroom earlier and had brown oil along with my stool. the stool was normal, was just this oily substance that scared me. it has been almost a year since i ate at a restaurant, however, 48 hours ago i did eat at Captain Ds. i had chicken, not fish, but have been told that they fry everything in fish oil. could this be the cause of the oil? my stomach was making noises all day today before this happened. but other than that i have no other symptoms. im really scared. please help. thank you.